Composition for plastering



I VI

\IUIIII vvl I IV &c., n". which composition of matter the fol- UNITED STATES GIBFBHUU PATENT OFFICE.

Examine:

REifBEN G. FARNIIAM, OF ELBRIDGE, ASSIGXOR 0F ONEJlALl" TO CHARLES \VARNER, OI JORDAN, NIHV YORK.

COMPOSITION FOR PLASTERING.

SPECIFICATION forming part of Letters Patent No. 4 16,882, dated February 10, 1891.

Application filed November 25, 1889. serial No. 331,527. (No specimens) To all whom it may concern: I lie it known that l, Ravens G. FARNHAM, n ciiizcn of the United States, residing at El- I bridge, in the county of Onondaga and State of New York, have invented a new and usei i'ul composition of matter to be used for the same purposes as plaster, mortar, and cent out, namely, for ceilings, walls, pavements,

lowing is a specification.

The object of my invention is to produce for the desired purposes a. composition that is cheaper, more easily worked, and placed in operative position, capable of a Smoother finish, and is more durable and effective than said aforesaid substances. To this end my invention consists, essentially, of composition composed of the following ingredients, namely: 1narl eighty-three and one-third per 3 cent, in built, and lorth d e c i nep sixteen and two-thirds per cent.

Marl, the base or principal ingredient:- of my composition, may he used either in its raw condition when taken from its natural position in the earth, in which state it is usually somewhat moist; or, if desired, the moist- 1 me may be driven off by a suitable heating 1 process and the dr Y mar then ground up by i suitable machinery, ihus forming the same into a dry powder. Mixed with this marl, either in its natural or dried state, as described. is Portland cement, preferably coinpounded, as stated, in the proportion of live parts of marl to one part of Portland cement when both materials are of a good quality. Itis,however,theensc that theseiugrcdients nnmelg' n rrl ami Portland cement-may be compounded in other j')1Opt)lil01lS2!i-, for'in- I I are to be used,

tional parts to every one hundred parts-in order that the saidvegetable fiber will give greater tenacity to the composition and ren' der the same somewhat more applicable for plastering. Agairnl frequently mix with my composition a small quantity of either white or gray gr isuln, which may he in the same proportion t iercto as the jute, and thus causes the composition to harden somewhat more quickly and also to be of greater whiteness. When desired for use in cold weather, I also prefer to mix a small quantity of saltas, for instance, five additional parts to every one hundred parts of my composition-which additional ingredient prevents the freezing of the composition and also aids the hardening. In practice the marl and Portland cement are mixed together in a. dry state and are then shipped t the exactloenlity where they They are then. mixed up with a sufiicient amount of water to render the sonic pliable .ln'l easy to wo'i-k, whereupon they are applied aiordinary plaster, mortar, cement. and other iike articles.

This com 'iosition is very readily piaet ii in position, is cn nho of a high finish. lint-dens quickly, Sii'fiifi i, nil to a plain surfaccaud a surfa e f rmed with interstices, as lathing, and when hardened does not crack or shiver.

Upon reference to the foregoing description it will he noted that no matter in what proportion the marl and cement are compounded the marl is in considerable excess oi the. cement, and this particular proport-iou-ihat is. an excess of marl compounded with a less amount. of cement, and preferalug. in the proportions of iiwe parts of marl to one of cement-is the essential feature of my instance, as strong as four parts of marl to onwntion.

of Portland content, or as weak as eight parts of marl to one per-cent. of Portland cement i according to thopurposc for which the composition is desired or the purity f the said ingredients.

For the ordinary purposes, as for plastering, too proportions given-mummy, five to ons ore deemed to be the best, and I frequ'entlj' mix with my compound a Small 'iuanuty of jute-35, For inslaucg'iue addi- 1am aware that an excess of Portland or other suitable cement has been used with a tering, Forum the same being d cement, and man In testimony where-qt signed my name, in

composed of into,

it in excess of the jute and "ortland cement, in

the presence of two at '1, combined with l of Onondaga, in the State REL? DEX Witnesses:

CLARK It. Kenton",

1 have hereunto A. E. PARSONL.

14th dayof November, 1853.

testing witnesses, at Syracuse, in the county of New York, this G. FARNHAM. 

